Category: Geologic History

Geologists Raise the Speed Limit for How Fast Continental Crust can Form

10/9/2020

Scientists have thought that the Earth's mountain ranges are formed through this process over many millions of years. But MIT geologists have now found that the planet can generate new land far more quickly than previously thought. In a paper published in the journal Geology, the team shows that parts of the Sierra Nevada mountain range in California rose up surprisingly fast, over a period of just 1.39 million years—more than twice as fast as expected for the region. The researchers attribute the rapid formation of land to a massive flare-up of magma.- Phys.Org

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Meteorite Crater Discovered Drilling for Outback Gold Estimated to Be 100MY

9/25/2020

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Geologists say they have discovered a large meteorite crater in outback Western Australia, which could be up to five times bigger than the famous Wolfe Creek Crater in the state's remote north. A team of geologists led by geological consultant Dr Jayson Meyers is behind the discovery in WA's Goldfields Initial estimates suggest the asteroid that created the crater collided with the Earth 100 million years ago. It is not visible from the surface but electromagnetic surveys, which map the rocks below, suggest the crater has a diameter of around 5 kilometres. - ABC (Australia)

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I started a CGCC Facebook page in May of '20 to share geo-environmental news but had qualms about FB's issues with accuracy. GeoNews is a response and at least a partial solution. sharing a few items from reliable sources each week.

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Geologists Raise the Speed Limit for How Fast Continental Crust can Form

Meteorite Crater Discovered Drilling for Outback Gold Estimated to Be 100MY

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